US512510A - Gardner hewett - Google Patents

Gardner hewett Download PDF

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US512510A
US512510A US512510DA US512510A US 512510 A US512510 A US 512510A US 512510D A US512510D A US 512510DA US 512510 A US512510 A US 512510A
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gardner
hewett
powder
depolarizer
voltaic cells
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • My invention consists in a depolarizer for voltaic cells, which is prepared and supplied to the market in the form of a dry powder which is prepared for use by solution in water.
  • the object of my invention is to do away with the handling and employment of. the powerful and corrosive nitric and sulphuric acids which are used for this purpose, ordinarily in liquid form, and to substitute a pow-.
  • a depolarizer for voltaic cells consisting of nitric acid, sulphuric acid and bichromate of sodium, in the form of a dry powder, substantially as described.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Dental Preparations (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

To all whom/it may concern:
UNITEI? STATES PATENT OFFICE.
GARDNER HEWETT, OF NEW YORK, N. Y.
DEPOLARIZER FOR VOLTAIC CELLS.
SPECIFICATION forming part of Letters Patent No. 512,510, dated January 9, 1894.
Appneauonfilua April 3,1293. Serialllo. 468,931- (Specimens) Be it known that I, GARDNER HEWETT, of the city, county, and State of New York, have invented a new and useful Improvement in Depolarizers for Voltaic Cells, of which the following is a specification.
My invention consists in a depolarizer for voltaic cells, which is prepared and supplied to the market in the form of a dry powder which is prepared for use by solution in water.
The object of my invention is to do away with the handling and employment of. the powerful and corrosive nitric and sulphuric acids which are used for this purpose, ordinarily in liquid form, and to substitute a pow-.
der whichis free from the objections incident to handling the above-named materials or materials of similar nature and which is very eflicient for the purpose named.
- I prepare the powderin the following manner: I mix together one part 0 nitric acid and three parts of sulphuric acid. I then combine equal parts of this mixture and bichromate of sodium. The acids are heated so as to effect prompt solution of the bichromate. When the solution is cooled, it solidifies into a solid mass which can be ground up in any suitable Way to produce a powder. This powder is easily handled, is free from acid or corrosive fumes, and is adapted for immediate use by simple solution in water in the proportion of about four pounds of powder to a gallon of Water.
I have found this compound to be an exceedinglyefficient and powerful depolarizer. I propose to supply my powder as aforesaid to the market as a new article of manufacture and sale.-
I claim- As a new article of manufacture, a depolarizer for voltaic cells consisting of nitric acid, sulphuric acid and bichromate of sodium, in the form of a dry powder, substantially as described.
GARDNER HEWE'IT.
Witnesses:
H. R. MULLER, M. Boson.
US512510D Gardner hewett Expired - Lifetime US512510A (en)

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US512510A true US512510A (en) 1894-01-09

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